NDLI: Clutter filtering and processing techniques for EMI detection and angle measurement in pulse Doppler radars

Content Provider	IEEE Xplore Digital Library
Author	Rademacher, P.E. Cantrell, B.H. Tavik, G.C.
Copyright Year	1996
Description	Author affiliation: Westinghouse Norden Syst. Inc., Melville, NY, USA (Rademacher, P.E.)
Abstract	A pulse Doppler radar transmits a block of constant PRF and coherently phased RF pulses, referred to as a "coherent dwell interval" or CDI. The resulting radar echo pulses are treated as a single entity and coherently integrated in the Doppler filter bank in the radar's receiver/processor. This provides both coherent processing gain as well as the velocity discrimination capability necessary to detect small targets in a cluttered environment. The relatively long CDI and minimum antenna scan rate constraints generally restrict the target illumination to only several CDIs per beam dwell. With each CDIs echo power potentially modulated due to the RF frequency diversity between CDIs (to reduce target fading loss), there is little basis for improving the target bearing estimate by centroiding across the CDIs of the beam dwell. In addition, the entire Doppler filter bank output in any range cell can be corrupted by a single EMI pulse. This can not only mask a true target echo at that range but can be difficult to distinguish from one or more true target echoes. False alarms are the inevitable result. A filtering methodology is presented for optimally suppressing the clutter contained in the received CDIs, thereby revealing EMI pulses contained in the data as well as the antenna scan modulation on the target echo. Several algorithms are suggested to extract the EMI detection and target bearing estimate from this data.
Starting Page	273
Ending Page	278
File Size	535763
Page Count	6
File Format	PDF
ISBN	0780331451
DOI	10.1109/NRC.1996.510693
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-05-13
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Filtering Electromagnetic interference Filter bank Doppler radar Clutter Radar detection Radio frequency Pulse modulation Radar antennas Lighting
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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